WO2000079502A1 - A collision avoidance system - Google Patents

A collision avoidance system Download PDF

Info

Publication number
WO2000079502A1
WO2000079502A1 PCT/AU2000/000718 AU0000718W WO0079502A1 WO 2000079502 A1 WO2000079502 A1 WO 2000079502A1 AU 0000718 W AU0000718 W AU 0000718W WO 0079502 A1 WO0079502 A1 WO 0079502A1
Authority
WO
WIPO (PCT)
Prior art keywords
monitoring device
signals
vehicle
indication
transmitter
Prior art date
Application number
PCT/AU2000/000718
Other languages
French (fr)
Inventor
Marion Russell Mark
Original Assignee
Commonwealth Scientific And Industrial Research Organisation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commonwealth Scientific And Industrial Research Organisation filed Critical Commonwealth Scientific And Industrial Research Organisation
Priority to AU55097/00A priority Critical patent/AU5509700A/en
Publication of WO2000079502A1 publication Critical patent/WO2000079502A1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/161—Decentralised systems, e.g. inter-vehicle communication

Definitions

  • THIS INVENTION relates to a collision avoidance system for vehicles
  • Vehicles are normally equipped with rear view mirrors for drivers to view
  • An object of the present invention is to provide a collision avoidance system
  • the present invention resides in a collision avoidance
  • the system comprises a monitoring device adapted for monitoring
  • the monitoring device includes a transmitter for transmitting radio
  • one tagging device includes a receiver tuned to receive radio frequency signals at
  • tagging device receive a signal at said first predetermined frequency.
  • monitoring device is arranged, in use, to transmit signals at said first predetermined
  • transmitter and receiver of said tagging device are arranged to have a range of up
  • system of the present invention provides a coverage to the rear of
  • the vehicle in an arc of 20 to 30 metres in radius and at an angle between 1 50 and
  • Said radio frequency signals may be selected from a high frequency band in
  • amplitude modulation (AM) mode In one embodiment said first predetermined
  • the or each tagging device includes means for setting an
  • identification code and the transmitter of said tagging device is arranged to include
  • said identification code in signals transmitted thereby.
  • the identification code may include one or more of an object identification
  • the monitoring device may include a pseudo-random generator for
  • the transmitters are arrange to operate on a duty cycle of 10
  • Said indication means may include a visual and/or audio indication.
  • the visual indication can be provided on a monitor including a cathode ray
  • liquid crystal diode type (LCD) monitor Desirably the
  • the monitor is a high definition TFT LCD monitor,
  • the monitoring device may include a switching means for selectively
  • rear of the vehicle can be viewed by the operator of the vehicle.
  • the or at least one of the cameras is functional in darkness and this camera typically
  • an infrared transmitter for transmitting infrared signals to areas for imaging
  • an infrared receiver for receiving reflected infrared signals.
  • the or each video camera may have a resolution of 480 lines of full colour
  • the monitoring device may have a selector switch for selectively switching
  • the monitoring device has a processor means adapted to indicate
  • the monitoring device may have a data storage and the processor means is
  • the stored identification codes are time stamped for indicating the times of
  • the monitoring devices includes a location
  • the processing means is adapted to store the location of the
  • Said location indication means means
  • GPS unit may be a GPS unit.
  • the or each tagging device may be powered by AC mains and/or battery
  • a low battery indicator for providing an indication
  • the present invention resides in a management
  • the management system comprises communications means for
  • the communications means is adapted to control
  • the monitoring devices to transmit data in their storage means for storage in the
  • Figure 1 is a schematic drawing showing areas that are not visible in rear
  • FIG. 1 is a schematic drawing showing an embodiment of the collision
  • Figure 3 is a circuit diagram for the avoidance system shown in Figure 2.
  • FIG. 4 is a flow diagram of a mine management system according to the
  • FIG. 1 there is shown schematically a mine truck 10
  • FIG. 2 shows a collision avoidance system 20 according to the present
  • the system 20 as shown in block diagrams in Figure 3 has a monitoring
  • RF unit 24 for mounting to about the
  • the RF unit 24 is configured to radiate RF signals within
  • a detection zone of about 160° and within a range of about 25 metres.
  • the system 20 has a number of tags 28 (one only shown) attached to
  • Each tag 28 has a receiver 30 tuned to a frequency of 434.6 Mhz and a
  • An antenna 34 is
  • the tags 28 are battery powered and each tag 28 has a low battery indicator
  • a battery charger 38 is employed to charge up to 96 tags and it includes a
  • test circuit for testing battery level and/or charge retention. Details of the test
  • results are communicated to a remote computer 40.
  • the RF unit also includes a transmitter 42 arranged to transmit RF signals at
  • antenna 42 for radiating and receiving the RF signals.
  • LED's are arranged on the tags 28 and the RF unit 24 to indicate respective
  • the cabin unit 26 has a micro processor 48 adapted to display identity (ID)
  • the identify codes each include
  • each tag may be hard wired or programmed in a memory.
  • the cabin unit 26 has an EEPROM 50 in which the group ID and
  • item ID of the device 22 are stored. These ID's are included in the RF signals
  • the cabin unit 26 has a data log in a storage 52.
  • the processor 48 is
  • the processor 48 energises a buzzer 54 when the driver engages the reverse
  • the device 22 has a key switch 56 which allows the driver to use an audio
  • Figure 4 shows a mine management system 60 incorporating the collision
  • two video cameras 62, 64 are used to capture images
  • system 60 has a forward sensor 70 for sensing blind areas in
  • the system 60 has a on-board GPS unit 74 for determining positions of the
  • the driver of the truck 10 can control operation of the video cameras 62 and

Abstract

A collision avoidance system (20) for vehicles (10), the system (20) comprises a monitoring device (22) mounted in each vehicle (10) and a tagging device (28) attachable to an object for monitoring during operation of the vehicles (10). The monitoring devices (10) each include a transmitter (42) which in operation transmits radio frequency signals at a first predetermined frequency, a receiver (44) tuned to receive radio frequency signals at a second predetermined frequency and an indication means arranged to provide an indication when the receiver (44) receives signals. The tagging devices (28) each include a receiver (30) tuned to receive radio frequency signals at said first predetermined frequency and a transmitter (32) which in operation transmits radio frequency signals at said second predetermined frequency when the corresponding receiver (28) receives a signal at said first predetermined frequency. Each of the monitoring devices (22) may include a pseudo-random generator for controlling the transmitter (42) to transmit signals in a random order and at a duty cycle of 10 milliseconds per 100 milliseconds. The tagging devices (28) may include a tag identification code and a group identification code in their transmission signals for discriminating the tagging devices (28).

Description

A COLLISION AVOIDANCE SYSTEM
TECHNICAL FIELD OF THE INVENTION
THIS INVENTION relates to a collision avoidance system for vehicles, and
in particular but not limited to a collision avoidance system for mine vehicles
operating in poor visibility areas.
BACKGROUND OF THE INVENTION
Vehicles are normally equipped with rear view mirrors for drivers to view
scenes behind or along sides thereof. The drivers however cannot see certain areas
as the vehicle body structure and cabin structure block these areas (blind areas)
from viewing.
When the vehicles are used in locations or during times of poor visibility,
such as in mines or when foggy, it is extremely difficult to discern objects through
scenes visible in the rear view mirrors fitted to the vehicles.
The inventor has noted that a large proportions of collisions occurring in
open cut mines in New South Wales and Queensland over the past ten years are
due to poor visibility. These collisions caused damages to properties and resulted
in lost productivity. In some cases they also caused fatalities.
In an attempt to reduce the number of collisions, audio reversing alarms are
employed in the vehicles. But these alarms are subject to complaints of excessive
noise by workers or people living in areas surrounding the mines or work places.
These alarms are also not effective in noisy working environments, especially where
workers are required to wear ear muffs. QBIECT OF THE INVENTION
An object of the present invention is to provide a collision avoidance system
for vehicles, which system alleviates or reduces to a certain degree one or more of
the above prior art disadvantageous.
SUMMARY OF THE INVENTION
In one aspect therefore the present invention resides in a collision avoidance
system for vehicles. The system comprises a monitoring device adapted for
mounting in a vehicle and at least one tagging device each attachable to an object
for monitoring. The monitoring device includes a transmitter for transmitting radio
frequency signals at a first predetermined frequency, a receiver tuned to receive
radio frequency signals at a second predetermined frequency and an indication
means for indicating the signals received by the receiver. The or each said at least
one tagging device includes a receiver tuned to receive radio frequency signals at
said first predetermined frequency and a transmitter adapted for transmitting radio
frequency signals at said second predetermined frequency when the receiver of said
tagging device receive a signal at said first predetermined frequency. The
monitoring device is arranged, in use, to transmit signals at said first predetermined
frequency when the vehicle is performing an operation which may cause a collision
and to indicate on said indication means receipt of any signal at said second
predetermined frequency.
In preference the transmitter and receiver of said monitoring device and the
transmitter and receiver of said tagging device are arranged to have a range of up
to 60 metres. More preferably the range is up to 30 metres. In a specific embodiment the system of the present invention provides a coverage to the rear of
the vehicle in an arc of 20 to 30 metres in radius and at an angle between 1 50 and
170 degrees.
Said radio frequency signals may be selected from a high frequency band in
amplitude modulation (AM) mode. In one embodiment said first predetermined
frequency is 434.6 MHz and said second predetermined frequency is 433.2 MHz.
Preferably the or each tagging device includes means for setting an
identification code and the transmitter of said tagging device is arranged to include
said identification code in signals transmitted thereby.
The identification code may include one or more of an object identification
and a group identification. This allows the system to discriminate signals from
multiple tagging devices.
The monitoring device may include a pseudo-random generator for
controlling the transmitter of said monitoring device to transmit signals in a random
order.
Typically the transmitters are arrange to operate on a duty cycle of 10
milliseconds out of every 100 milliseconds in order to minimise interference.
Said indication means may include a visual and/or audio indication.
The visual indication can be provided on a monitor including a cathode ray
tube type monitor and a liquid crystal diode type (LCD) monitor. Desirably the
monitor is a high definition TFT LCD monitor, The monitoring device may include a switching means for selectively
switching into operation one or both of the visual indication and the audio
indication.
The monitoring device advantageously has one or more video cameras
arranged for providing video signals to said visual indication so that images to the
rear of the vehicle can be viewed by the operator of the vehicle. In a preferred form
the or at least one of the cameras is functional in darkness and this camera typically
includes an infrared transmitter for transmitting infrared signals to areas for imaging
and an infrared receiver for receiving reflected infrared signals.
The or each video camera may have a resolution of 480 lines of full colour
vision when used in areas of sufficient light and a monochrome infrared vision
when used in poor or no light.
The monitoring device may have a selector switch for selectively switching
on an audio alarm for warning persons in the vicinity of the vehicle. It may also
have a buzzer adapted to be ON when the vehicle is performing an operation
which may cause a collision.
Desirably the monitoring device has a processor means adapted to indicate
on the indication means identification codes received at the receiver of the
monitoring device.
The monitoring device may have a data storage and the processor means is
adapted to store said received identifications codes in the data storage. Preferably
the stored identification codes are time stamped for indicating the times of
reception of the identification codes. In an advantageous form the monitoring devices includes a location
indication means and the processing means is adapted to store the location of the
vehicle when the identification codes are received. Said location indication means
may be a GPS unit.
The or each tagging device may be powered by AC mains and/or battery
power supply. It is preferred that a low battery indicator for providing an indication
when the battery power supply is below a predetermined level is provided for this
device so that the time for battery charging or replacing batteries is readily
determinable.
In another aspect therefore the present invention resides in a management
system for a fleet of vehicles each having a collision avoidance system as described
above. The management system comprises communications means for
communication with the monitoring devices of the collision avoidance system and
memory means for storing data. The communications means is adapted to control
the monitoring devices to transmit data in their storage means for storage in the
memory means.
BRIEF DESCRIPTION OF THE INVENTION
In order that the present invention can be readily understood and put into
practical effect the description will now be made in reference to the accompanying
drawings which illustrate non-limiting embodiments of the present invention, and
wherein:-
Figure 1 is a schematic drawing showing areas that are not visible in rear
view mirrors of a vehicle; Figure 2 is a schematic drawing showing an embodiment of the collision
avoidance system according to the present invention;
Figure 3 is a circuit diagram for the avoidance system shown in Figure 2; and
Figure 4 is a flow diagram of a mine management system according to the
present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring initially to Figure 1 , there is shown schematically a mine truck 10
having side mounted rear view mirrors (not shown), and areas 12 which are visible
in the mirrors and blind areas 14 which are not visible in the mirrors. As can be
seen the total of the blind areas is substantially large.
Figure 2 shows a collision avoidance system 20 according to the present
invention. The system 20 as shown in block diagrams in Figure 3 has a monitoring
device 22 including a radio frequency (RF) unit 24 for mounting to about the
middle of the rear of the truck 10, and a cabin unit 26 for mounting to a part in the
cabin of the truck 10.
In this embodiment the RF unit 24 is configured to radiate RF signals within
a detection zone of about 160° and within a range of about 25 metres.
The system 20 has a number of tags 28 (one only shown) attached to
respective objects to be monitored for avoiding possible collisions. The objects
may include personnel working in the mine, light vehicles, haphazard locations and
items of value. Each tag 28 has a receiver 30 tuned to a frequency of 434.6 Mhz and a
transmitter 32 arranged to transmit RF signals at 433.2 Mhz. An antenna 34 is
employed for receiving and transmitting the RF signals.
The tags 28 are battery powered and each tag 28 has a low battery indicator
36 for providing a visual indication when the battery power is below a certain level.
A battery charger 38 is employed to charge up to 96 tags and it includes a
test circuit for testing battery level and/or charge retention. Details of the test
results are communicated to a remote computer 40.
The RF unit also includes a transmitter 42 arranged to transmit RF signals at
434.6 MHz, a receiver 44 arranged to receive RF signals at 433.2 MHz and an
antenna 42 for radiating and receiving the RF signals.
LED's are arranged on the tags 28 and the RF unit 24 to indicate respective
signal transmission and signal reception.
The cabin unit 26 has a micro processor 48 adapted to display identity (ID)
codes in the signals received by the receiver 44. The identify codes each include
a group ID and an item ID. Whilst not shown it should be understood that the ID
code in each tag may be hard wired or programmed in a memory.
Likewise the cabin unit 26 has an EEPROM 50 in which the group ID and
item ID of the device 22 are stored. These ID's are included in the RF signals
transmitted by the transmitter 42.
The cabin unit 26 has a data log in a storage 52. The processor 48 is
programmed to store in the storage 52 the ID's in each received signal and the
times of receipt of the signals. The processor 48 energises a buzzer 54 when the driver engages the reverse
gear of the truck 10.
The device 22 has a key switch 56 which allows the driver to use an audio
alarm for warning personnel.
Figure 4 shows a mine management system 60 incorporating the collision
avoidance system 20 as described above.
In the system 60 two video cameras 62, 64 are used to capture images
behind the truck 10, and two side sensors are used to sense blind areas adjacent to
sides of the truck 10.
In addition the system 60 has a forward sensor 70 for sensing blind areas in
front of the truck 10 and pedestrian sensor 72 for sensing pedestrians close to the
truck.
The system 60 has a on-board GPS unit 74 for determining positions of the
truck 10 and other vehicles.
The driver of the truck 10 can control operation of the video cameras 62 and
64 a driver interface 76.
Whilst the above has been given by way of illustrative example of the
present invention many variations and modifications thereto will be apparent to
those skilled in the art without departing from the broad ambit and scope of the
invention as herein set forth.

Claims

1 . A collision avoidance system for vehicles comprising a monitoring device
adapted for mounting in a vehicle and at least one tagging device each attachable
to an object for monitoring, the monitoring device including a transmitter for
transmitting radio frequency signals at a first predetermined frequency, a receiver
tuned to receive radio frequency signals at a second predetermined frequency and
an indication means adapted to provide an indication on reception of signals at the
receiver of the monitoring device, the or each said at least one tagging device
including a receiver tuned to receive radio frequency signals at said first
predetermined frequency and a transmitter adapted for transmitting radio frequency
signals at said second predetermined frequency when the receiver of said tagging
device receives a signal at said first predetermined frequency, the monitoring
device being arranged to transmit signals at said first predetermined frequency
when the vehicle is performing an operation which may cause a collision with the
or one of the objects and to indicate on said indication means when receiving a
signal at said second predetermined frequency from the or any of said tagging
device.
2. The system according to claim 1 wherein the transmitter and receiver of said
monitoring device are arranged to have a transmission range of up to 60 metres.
3. The system according to claim 2 wherein the monitoring device is arranged
to provide an area of coverage to the rear of the vehicle in an arc of 20 to 30 metres
radius and at an angle between 150 and 170 degrees from the vehicle.
4. The system according to claim 1 wherein said first and second
predetermined radio frequency signals are selected from a high frequency band in
an amplitude modulation (AM) mode.
5. The system according to claim 4 wherein said first predetermined frequency
is 434.6 MHz and said second predetermined frequency is 433.2 MHz.
6. The system according to claim 1 wherein the or each tagging device
including means for setting an identification code and the transmitter of said tagging
device is arranged to include said identification code in signals transmitted thereby.
7. The system according to claim 6 wherein the or each identification code
includes one or more of an object identification code and a group identification
code.
8. The system according to claim 1 wherein the monitoring device includes a
pseudo-random generator for controlling the transmitter of said monitoring device
to transmit signals in a random order.
9. The system according to claim 1 wherein the transmitter of the monitoring
device and the or each transmitter of the tagging devices are arrange to operate on
a duty cycle of 10 milliseconds out of every 100 milliseconds in order to minimise
interference.
10. The system according to claim 1 wherein said indication means including
a visual indication and/or an audio indication.
1 1 . The system according to claim 10 wherein the visual indication being
provided on a video monitor.
12. The system according to claim 10 wherein the monitoring device including
a switching means for selectively switching one or both of the visual indication and
the audio indication into operation.
13. The system according to claim 10 wherein the monitoring device having one
or more video cameras arranged to capture images to the rear of the vehicle for
providing video signals of the captured images to said indication means so that the
images to the rear of the vehicle can be viewed by an operator of the vehicle.
14. The system according to claim 13 wherein the or at least one of the cameras
is functional in darkness.
15. The system according to claim 14 wherein the or each camera functional
in darkness including an infrared transmitter for transmitting infrared signals to areas
for imaging and an infrared receiver for receiving reflected infrared signals.
16. The system according to claim 1 wherein the monitoring device having a
selector switch for selectively switching on an audio alarm for warning persons in
the vicinity of the vehicle.
1 7. The system according to claim 1 wherein the vehicle having a buzzer
adapted to provide audible signals when the vehicle is performing an operation
which may cause a collision.
18. The system according to claim 6 wherein the monitoring device having a
processor means adapted to indicate on the indication means the identification
codes received at the receiver of the monitoring device.
19. The system according to claim 1 8 wherein the monitoring device having a
data storage and the processor means is adapted to store said received
identifications codes in the data storage.
20. The system according to claim 19 wherein the stored identification codes
being time stamped for indicating the times of reception of the identification codes.
21 . The system according to claim 19 wherein the monitoring device including
a location identification means adapted to identify the location of the vehicle and
the processing means is adapted to store the identified location of the vehicle when
the identification codes are received.
22. The system according to claim 1 wherein the or each tagging device has a
battery power supply and a low battery indicator for providing an indication when
the battery power supply is below a predetermined level.
23. A management system for a fleet of vehicles each having a collision
avoidance system according to claim 1 , the management system comprises
communications means for communication with the monitoring devices of the
collision avoidance system and memory means for storing data, the
communications means being adapted to control the monitoring devices to transmit
data in their storage means for storage in the memory means.
PCT/AU2000/000718 1999-06-23 2000-06-23 A collision avoidance system WO2000079502A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55097/00A AU5509700A (en) 1999-06-23 2000-06-23 A collision avoidance system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ1170 1999-06-23
AUPQ1170A AUPQ117099A0 (en) 1999-06-23 1999-06-23 A collison avoidance system

Publications (1)

Publication Number Publication Date
WO2000079502A1 true WO2000079502A1 (en) 2000-12-28

Family

ID=3815360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000718 WO2000079502A1 (en) 1999-06-23 2000-06-23 A collision avoidance system

Country Status (2)

Country Link
AU (1) AUPQ117099A0 (en)
WO (1) WO2000079502A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003009254A1 (en) * 2001-07-16 2003-01-30 727823 Ontario Limited Method and apparatus for avoiding collisions
GB2391672A (en) * 2002-08-01 2004-02-11 James Griffiths Vehicle obstacle warning system using polling of remote transponder tags
WO2004032091A1 (en) * 2002-10-04 2004-04-15 Rf Innovations Pty Ltd Proximity detection system and method
WO2004090830A1 (en) * 2003-04-08 2004-10-21 Schauenburg Flexadux (Pty) Ltd Collision avoidance method and system
US7265665B2 (en) 2003-03-26 2007-09-04 Rfad Inc. Vehicle proximity alarm system and method
WO2010101480A1 (en) * 2009-03-06 2010-09-10 Modern Transport Engineers (2002) Limited A safety device and a method for its use
WO2011069266A1 (en) * 2009-12-11 2011-06-16 Safemine Ag Method and device for generating proximity warnings for persons in a given area
US8000385B2 (en) 2008-08-14 2011-08-16 Computime, Ltd. Multiple devices communicating on a single communication channel with a consecutively sequenced signal
GB2479386A (en) * 2010-04-08 2011-10-12 Ken Doran System for alerting a vehicle operator to the presence of a close-range obstacle
GB2490905A (en) * 2011-05-17 2012-11-21 Dave Lacey Proximity alarm to alert HGV or LGV that a cyclist or motorbike is approaching
US8779934B2 (en) 2009-06-12 2014-07-15 Safemine Ag Movable object proximity warning system
US8922431B2 (en) 2010-04-13 2014-12-30 Becker Research And Development (Proprietary) Limited Apparatus, a system and a method for collission avoidance
US8994557B2 (en) 2009-12-11 2015-03-31 Safemine Ag Modular collision warning apparatus and method for operating the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723737A (en) * 1984-10-18 1988-02-09 Matra Transport Process and device for transmitting data between vehicles moving over a track
EP0493141A1 (en) * 1990-11-13 1992-07-01 Thomson-Csf Hyperfrequency device for preventing collisions among vehicles, and corresponding data transmission method
EP0625770A1 (en) * 1993-05-11 1994-11-23 STMicroelectronics S.r.l. Interactive road traffic monitoring method and apparatus
WO1995015546A2 (en) * 1993-12-03 1995-06-08 Ivan Stern Security/prevention system with related device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723737A (en) * 1984-10-18 1988-02-09 Matra Transport Process and device for transmitting data between vehicles moving over a track
EP0493141A1 (en) * 1990-11-13 1992-07-01 Thomson-Csf Hyperfrequency device for preventing collisions among vehicles, and corresponding data transmission method
EP0625770A1 (en) * 1993-05-11 1994-11-23 STMicroelectronics S.r.l. Interactive road traffic monitoring method and apparatus
WO1995015546A2 (en) * 1993-12-03 1995-06-08 Ivan Stern Security/prevention system with related device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003009254A1 (en) * 2001-07-16 2003-01-30 727823 Ontario Limited Method and apparatus for avoiding collisions
GB2391672A (en) * 2002-08-01 2004-02-11 James Griffiths Vehicle obstacle warning system using polling of remote transponder tags
WO2004032091A1 (en) * 2002-10-04 2004-04-15 Rf Innovations Pty Ltd Proximity detection system and method
US7265665B2 (en) 2003-03-26 2007-09-04 Rfad Inc. Vehicle proximity alarm system and method
WO2004090830A1 (en) * 2003-04-08 2004-10-21 Schauenburg Flexadux (Pty) Ltd Collision avoidance method and system
US8000385B2 (en) 2008-08-14 2011-08-16 Computime, Ltd. Multiple devices communicating on a single communication channel with a consecutively sequenced signal
WO2010101480A1 (en) * 2009-03-06 2010-09-10 Modern Transport Engineers (2002) Limited A safety device and a method for its use
US8779934B2 (en) 2009-06-12 2014-07-15 Safemine Ag Movable object proximity warning system
US9129509B2 (en) 2009-06-12 2015-09-08 Safemine Ag Movable object proximity warning system
WO2011069266A1 (en) * 2009-12-11 2011-06-16 Safemine Ag Method and device for generating proximity warnings for persons in a given area
US8994557B2 (en) 2009-12-11 2015-03-31 Safemine Ag Modular collision warning apparatus and method for operating the same
GB2479386A (en) * 2010-04-08 2011-10-12 Ken Doran System for alerting a vehicle operator to the presence of a close-range obstacle
US8922431B2 (en) 2010-04-13 2014-12-30 Becker Research And Development (Proprietary) Limited Apparatus, a system and a method for collission avoidance
GB2490905A (en) * 2011-05-17 2012-11-21 Dave Lacey Proximity alarm to alert HGV or LGV that a cyclist or motorbike is approaching

Also Published As

Publication number Publication date
AUPQ117099A0 (en) 1999-07-15

Similar Documents

Publication Publication Date Title
Kanan et al. An IoT-based autonomous system for workers' safety in construction sites with real-time alarming, monitoring, and positioning strategies
US8922431B2 (en) Apparatus, a system and a method for collission avoidance
CN101855659B (en) Proximity warning system
US6989739B2 (en) Vehicular monitoring systems with a multi-window display
US4990890A (en) Vehicle security system
CA2734873C (en) Radio-frequency identification (rfid) safety system
WO2000079502A1 (en) A collision avoidance system
US7808371B2 (en) Vehicle fleet security system
CN101678816B (en) Vehicle surveillance and communication system and method of providing a long vehicle with a surveillance system
WO2015121818A2 (en) System for preventing collisions between self-propelled vehicles and obstacles in workplaces or the like
Ruff et al. Application of radio-frequency identification systems to collision avoidance in metal/nonmetal mines
WO2015000087A1 (en) Operator drowsiness detection in surface mines
JP2008097592A (en) Operation environment monitoring system
KR20170055370A (en) Security System by distance using Active RFID
US20200126331A1 (en) Operation system, on-board device, industrial vehicle, forklift, computer program, data structure, and operation method
US7215241B2 (en) Tamper detection sensor antenna
US20150002311A1 (en) Active beacon for vulnerable road users
Ruff Monitoring Blind Spots: A Major Concern For Haul Trucks-Introduction
US20040095227A1 (en) Wireless alarm system
CN103350684A (en) Automobile parking safety protector
US9080723B2 (en) Personnel classification and response system
CN111784968A (en) Biomass stock ground people and vehicles cross operation early warning system
GB2391672A (en) Vehicle obstacle warning system using polling of remote transponder tags
ES2267169T3 (en) SECURITY SYSTEM.
EP1231479A1 (en) Safety system

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP